CN106381457A - Preparation method of anti-fatigue spring steel - Google Patents
Preparation method of anti-fatigue spring steel Download PDFInfo
- Publication number
- CN106381457A CN106381457A CN201610797453.0A CN201610797453A CN106381457A CN 106381457 A CN106381457 A CN 106381457A CN 201610797453 A CN201610797453 A CN 201610797453A CN 106381457 A CN106381457 A CN 106381457A
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- CN
- China
- Prior art keywords
- spring steel
- preparation
- resisting fatigue
- refine
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/021—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant characterised by their composition, e.g. comprising materials providing for particular spring properties
Abstract
The invention discloses a preparation method of anti-fatigue spring steel. The preparation method comprises the following steps: (1) mixing of raw materials of the anti-fatigue spring steel, which comprise the following components in percentage by mass: 0.71%-0.82% of C, 3.1%-3.5% of Si, 0.3%-0.5% of Mn, 0.012%-0.013% of Ti, 0.1%-0.2% of S and 0.3%-0.5% of Al; (2) primary smelting; (3) refining; (4) cooling forming, including cooling refined anti-fatigue spring steel to 1,100 DEG C with the cooling rate controlled at 3-5 DEG C/min, keeping the refined anti-fatigue spring steel at 1,100 DEG C for 16-18 min, and then continuing to cool the refined anti-fatigue spring steel to normal temperature with the cooling rate controlled at 15-19 DEG C/min; (5) rolling; (6) quenching; and (7) tempering. The preparation method provided by the invention improves the anti-fatigue property of the anti-fatigue spring steel.
Description
Technical field
The present invention relates to a kind of preparation method of resisting fatigue spring steel.
Background technology
The performance indications such as intensity, toughness and grain size are only capable of indirectly evaluating spring steel, and anti-fatigue performance is only reflection bullet
The most important index of spring steel, it not only can reflect the quality of the property indices such as intensity, toughness and the grain size of spring steel,
Can also reflect best match between above-mentioned each performance and by the coupling between this performance the shadow to spring steel service life
Ring.And the inherent quality of spring steel has very big associating with the fatigue resistance of spring steel.Therefore, no matter spring steel kind also
It is the research of production technology aspect, all with the fatigue behaviour of raising spring steel as final purpose.
Content of the invention
For above-mentioned technical problem, the present invention has designed and developed a kind of system of the excellent resisting fatigue spring steel of anti-fatigue performance
Preparation Method.
The present invention provides technical scheme below：
A kind of preparation method of resisting fatigue spring steel, including：
Step (1) by the raw material mix homogeneously of spring steel, the raw material of spring steel include by mass percentage with the following group
Point：0.71～0.82% C, 3.1～3.5% Si, 0.3～0.5% Mn, 0.012～0.013% Ti, 0.1～
0.2% S and 0.3～0.5% Al, balance of Fe；
Step (2) is just refined, and just refines and continues 5～10min at 1300 DEG C, starts from 1300 DEG C with 10～15 DEG C/min afterwards
Speed rise to 1700 DEG C, and continue 5～10min at 1700 DEG C again；
Step (3) refine, the temperature of refine is 1550～1600 DEG C, after refine carries out 10～15min, sends into temperature and exists
1550～1600 DEG C of hot nitrogen, blows lasting 5min and stops, and the concise persistent period altogether is 30～35min；
Step (4) cooling shaping, control rate of cooling is 3～5 DEG C/min, is cooled to 1100 DEG C, keeps 16 at 1100 DEG C
～18min, proceeds to cool down, control rate of cooling is 15～19 DEG C/min, until being cooled to room temperature afterwards；
Step (5) rolls；
Step (6) quenches；
Step (7) is tempered.
Preferably, in the described preparation method of resisting fatigue spring steel, the raw material of spring steel is included by mass percentage
The following components of meter：0.82% C, 3.1% Si, 0.33% Mn, 0.012% Ti, 0.15% S and 0.34%
Al, balance of Fe.
Preferably, in the described preparation method of resisting fatigue spring steel, in described step (2), just refine at 1300 DEG C
Continue 10min, continue 10min at 1700 DEG C again.
Preferably, in the described preparation method of resisting fatigue spring steel, in described step (2), from 1300 DEG C start with
The speed of 12 DEG C/min rises to 1700 DEG C.
Preferably, in the described preparation method of resisting fatigue spring steel, in described step (3), concise temperature is
1550℃.
The present invention improves the anti-fatigue performance of spring steel.
Specific embodiment
The present invention is described in further detail below, with make those skilled in the art with reference to specification word being capable of evidence
To implement.
The present invention provides a kind of preparation method of resisting fatigue spring steel, including：
Step (1) by the raw material mix homogeneously of spring steel, the raw material of spring steel include by mass percentage with the following group
Point：0.71～0.82% C, 3.1～3.5% Si, 0.3～0.5% Mn, 0.012～0.013% Ti, 0.1～
0.2% S and 0.3～0.5% Al, balance of Fe；
Step (2) is just refined, and just refines and continues 5～10min at 1300 DEG C, starts from 1300 DEG C with 10～15 DEG C/min afterwards
Speed rise to 1700 DEG C, and continue 5～10min at 1700 DEG C again；
Step (3) refine, the temperature of refine is 1550～1600 DEG C, after refine carries out 10～15min, sends into temperature and exists
1550～1600 DEG C of hot nitrogen, blows lasting 5min and stops, and the concise persistent period altogether is 30～35min；
Step (4) cooling shaping, control rate of cooling is 3～5 DEG C/min, is cooled to 1100 DEG C, keeps 16 at 1100 DEG C
～18min, proceeds to cool down, control rate of cooling is 15～19 DEG C/min, until being cooled to room temperature afterwards；
Step (5) rolls；
Step (6) quenches；
Step (7) is tempered.
The present invention accurately sets the condition of just refining, carries out certain time at relatively low temperature first, makes
Raw mixture partly first changing with respect to outside, is being risen under higher temperature with certain speed afterwards, is making raw material
The change of mixture diffuses to inner side by outside.This contributes to improving the organizational structure in the outside of spring steel, so that spring steel
The mechanical property in outside is more excellent.
Secondly, the present invention goes back the concise condition of careful design, after concise carrying out to certain time, sends into temperature and also exists
1550～1600 DEG C of hot nitrogen, blows lasting 5min, continues refine.Aforesaid operations contribute to the upper surface to liquation provides guarantor
Shield, and make the mechanical property outside spring steel more preferable.
Cooling shaping is carried out in two stages, and first stage is more than 1100 DEG C, with the cooling of slow speed, so that
It is internally formed the tissue of densification in spring steel in cooling procedure；Second stage is to arrive room temperature at 1100 DEG C, with respect to relatively
Fast speed cooling, reduces the brittle inclusion of aluminium sesquioxide, to improve the anti-fatigue performance of spring steel.
The fatigue limit of the spring steel that the present invention prepares can reach 990MPa, compared to traditional handicraft
800MPa, has increased significantly.The tensile strength of the spring steel of the present invention can reach 2301MPa, and elongation after fracture is
10.4%.
In the raw material composition of spring steel, C can improve intensity and the hardness of spring steel；Si can improve the bullet of spring steel
Property, and acid resistance can be improved；Mn can improve the intensity of spring steel.
Preferably, in the described preparation method of resisting fatigue spring steel, the raw material of spring steel is included by mass percentage
The following components of meter：0.82% C, 3.1% Si, 0.33% Mn, 0.012% Ti, 0.15% S and 0.34%
Al, balance of Fe.
Preferably, in the described preparation method of resisting fatigue spring steel, in described step (2), just refine at 1300 DEG C
Continue 10min, continue 10min at 1700 DEG C again.
Preferably, in the described preparation method of resisting fatigue spring steel, in described step (2), from 1300 DEG C start with
The speed of 12 DEG C/min rises to 1700 DEG C.
Preferably, in the described preparation method of resisting fatigue spring steel, in described step (3), concise temperature is
1550℃.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in description and embodiment
With, it can be applied to various suitable the field of the invention completely, for those skilled in the art, can be easily
Realize other modification, therefore under the general concept being limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details.
Claims (5)
1. a kind of preparation method of resisting fatigue spring steel is it is characterised in that include：
By the raw material mix homogeneously of spring steel, the raw material of spring steel includes following components by mass percentage to step (1)：
0.71～0.82% C's, 3.1～3.5% Si, 0.3～0.5% Mn, 0.012～0.013% Ti, 0.1～0.2%
S and 0.3～0.5% Al, balance of Fe；
Step (2) is just refined, and just refines and continues 5～10min at 1300 DEG C, starts from 1300 DEG C with the speed of 10～15 DEG C/min afterwards
Degree rises to 1700 DEG C, and continues 5～10min at 1700 DEG C again；
Step (3) refine, the temperature of refine is 1550～1600 DEG C, after refine carries out 10～15min, sends into temperature 1550
～1600 DEG C of hot nitrogen, blows lasting 5min and stops, and the concise persistent period altogether is 30～35min；
Step (4) cooling shaping, control rate of cooling be 3～5 DEG C/min, be cooled to 1100 DEG C, 1100 DEG C keep 16～
18min, proceeds to cool down, control rate of cooling is 15～19 DEG C/min, until being cooled to room temperature afterwards；
Step (5) rolls；
Step (6) quenches；
Step (7) is tempered.
2. the preparation method of resisting fatigue spring steel as claimed in claim 1 is it is characterised in that the raw material of spring steel is included by matter
The following components of amount percentages：0.82% C, 3.1% Si, 0.33% Mn, 0.012% Ti, 0.15% S and
0.34% Al, balance of Fe.
3. the preparation method of resisting fatigue spring steel as claimed in claim 1 is it is characterised in that in described step (2), just refine
Continue 10min at 1300 DEG C, continue 10min at 1700 DEG C again.
4. the preparation method of resisting fatigue spring steel as claimed in claim 3 is it is characterised in that in described step (2), from 1300
DEG C beginning rises to 1700 DEG C with the speed of 12 DEG C/min.
5. the preparation method of resisting fatigue spring steel as claimed in claim 1 is it is characterised in that in described step (3), concise
Temperature is 1550 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610797453.0A CN106381457A (en) | 2016-08-31 | 2016-08-31 | Preparation method of anti-fatigue spring steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610797453.0A CN106381457A (en) | 2016-08-31 | 2016-08-31 | Preparation method of anti-fatigue spring steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106381457A true CN106381457A (en) | 2017-02-08 |
Family
ID=57938876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610797453.0A Pending CN106381457A (en) | 2016-08-31 | 2016-08-31 | Preparation method of anti-fatigue spring steel |
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| Country | Link |
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| CN (1) | CN106381457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116590628A (en) * | 2023-07-18 | 2023-08-15 | 南通多邦机械有限公司 | Preparation method of high-elasticity anti-fatigue horseshoe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671792A (en) * | 2008-09-12 | 2010-03-17 | 攀钢集团研究院有限公司 | Spring steel and preparation method thereof |
| CN103614634A (en) * | 2013-11-28 | 2014-03-05 | 柳城县鼎铭金属制品有限公司 | Alloy spring wire and preparation method thereof |
| CN105838980A (en) * | 2015-12-09 | 2016-08-10 | 苏州市吴中区胥口丰收机械配件厂 | High-strength spring steel and preparation method thereof |
-
2016
- 2016-08-31 CN CN201610797453.0A patent/CN106381457A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671792A (en) * | 2008-09-12 | 2010-03-17 | 攀钢集团研究院有限公司 | Spring steel and preparation method thereof |
| CN103614634A (en) * | 2013-11-28 | 2014-03-05 | 柳城县鼎铭金属制品有限公司 | Alloy spring wire and preparation method thereof |
| CN105838980A (en) * | 2015-12-09 | 2016-08-10 | 苏州市吴中区胥口丰收机械配件厂 | High-strength spring steel and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 付广艳 主编: "《机械工程材料》", 28 February 2014, 北京理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116590628A (en) * | 2023-07-18 | 2023-08-15 | 南通多邦机械有限公司 | Preparation method of high-elasticity anti-fatigue horseshoe |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180619 Address after: 518000 Guangdong Shenzhen Longhua New District big wave street Longsheng community Tenglong road gold rush e-commerce incubation base exhibition hall E commercial block 706 Applicant after: Shenzhen step Technology Transfer Center Co., Ltd. Address before: 536000 South Asia building, 66 North Bay West Road, Yinhai, Beihai, the Guangxi Zhuang Autonomous Region Applicant before: Lai Shiquan |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170208 |